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//===- AppendingTypeTableBuilder.cpp --------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/CodeView/AppendingTypeTableBuilder.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/DebugInfo/CodeView/CodeView.h"
#include "llvm/DebugInfo/CodeView/ContinuationRecordBuilder.h"
#include "llvm/DebugInfo/CodeView/RecordSerialization.h"
#include "llvm/DebugInfo/CodeView/TypeIndex.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/BinaryByteStream.h"
#include "llvm/Support/BinaryStreamWriter.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/Error.h"
#include <algorithm>
#include <cassert>
#include <cstdint>
#include <cstring>
using namespace llvm;
using namespace llvm::codeview;
TypeIndex AppendingTypeTableBuilder::nextTypeIndex() const {
return TypeIndex::fromArrayIndex(SeenRecords.size());
}
AppendingTypeTableBuilder::AppendingTypeTableBuilder(BumpPtrAllocator &Storage)
: RecordStorage(Storage) {}
AppendingTypeTableBuilder::~AppendingTypeTableBuilder() = default;
Optional<TypeIndex> AppendingTypeTableBuilder::getFirst() {
if (empty())
return None;
return TypeIndex(TypeIndex::FirstNonSimpleIndex);
}
Optional<TypeIndex> AppendingTypeTableBuilder::getNext(TypeIndex Prev) {
if (++Prev == nextTypeIndex())
return None;
return Prev;
}
CVType AppendingTypeTableBuilder::getType(TypeIndex Index){
return CVType(SeenRecords[Index.toArrayIndex()]);
}
StringRef AppendingTypeTableBuilder::getTypeName(TypeIndex Index) {
llvm_unreachable("Method not implemented");
}
bool AppendingTypeTableBuilder::contains(TypeIndex Index) {
if (Index.isSimple() || Index.isNoneType())
return false;
return Index.toArrayIndex() < SeenRecords.size();
}
uint32_t AppendingTypeTableBuilder::size() { return SeenRecords.size(); }
uint32_t AppendingTypeTableBuilder::capacity() { return SeenRecords.size(); }
ArrayRef<ArrayRef<uint8_t>> AppendingTypeTableBuilder::records() const {
return SeenRecords;
}
void AppendingTypeTableBuilder::reset() { SeenRecords.clear(); }
static ArrayRef<uint8_t> stabilize(BumpPtrAllocator &RecordStorage,
ArrayRef<uint8_t> Record) {
uint8_t *Stable = RecordStorage.Allocate<uint8_t>(Record.size());
memcpy(Stable, Record.data(), Record.size());
return ArrayRef<uint8_t>(Stable, Record.size());
}
TypeIndex
AppendingTypeTableBuilder::insertRecordBytes(ArrayRef<uint8_t> &Record) {
TypeIndex NewTI = nextTypeIndex();
Record = stabilize(RecordStorage, Record);
SeenRecords.push_back(Record);
return NewTI;
}
TypeIndex
AppendingTypeTableBuilder::insertRecord(ContinuationRecordBuilder &Builder) {
TypeIndex TI;
auto Fragments = Builder.end(nextTypeIndex());
assert(!Fragments.empty());
for (auto C : Fragments)
TI = insertRecordBytes(C.RecordData);
return TI;
}
bool AppendingTypeTableBuilder::replaceType(TypeIndex &Index, CVType Data,
bool Stabilize) {
assert(Index.toArrayIndex() < SeenRecords.size() &&
"This function cannot be used to insert records!");
ArrayRef<uint8_t> Record = Data.data();
if (Stabilize)
Record = stabilize(RecordStorage, Record);
SeenRecords[Index.toArrayIndex()] = Record;
return true;
}
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